HC
Helen Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Helen Carlson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents Malcolm & Lydia — first a spouse (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Clerk |
| Industry | Bakery Co. |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 600 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Rockford City |
| Est. Birth Year | ~1913 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| John Carlson | Other | — | 39 | ~1901 |
| Helen Carlson | Spouse | — | 27 | ~1913 |
| Kenneth Carlson | Son | — | 1 | ~1939 |
| Oscar Carlson | Head | — | 29 | ~1911 |
Census Appearances
1920
Winnebago, Illinois
Daughter, age 6
Winnebago, Illinois · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helmet |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Winnebago, Illinois
Daughter, age 16
Winnebago, Illinois · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Store Variety |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Spouse, age 27
Winnebago-County, Illinois · implied b. ~1913 — 4 household members
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Occupation | Clerk |
| Industry | Bakery Co. |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 600 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Helen Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Malcolm Carlson (~0.92 confidence) and mother Lydia Carlson (~0.92 confidence) and mother Selma Carlson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Malcolm Carlson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Lydia Carlson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Selma Carlson
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Carlson
Spouse · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00914-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Sorensen | 50 | Head | Supt. | Illinois |
| 2 | Esther Sorensen | 44 | Wife | — | Illinois |
| 3 | Peter Larson | 48 | Head | Bldg Contractor | Sweden |
| 4 | Adelia Larson | 48 | Wife | — | Sweden |
| 5 | Gust Klein | 55 | Head | Band Sawer | Sweden |
| 6 | Cecelia Klein | 49 | Wife | — | Illinois |
| 7 | Myrtle Klein | 28 | Daughter | Office Clerk | Illinois |
| 8 | Helen Klein | 25 | Daughter | Inspector | Illinois |
| 9 | Henning Lindberg | 49 | Head | Machinist | Sweden |
| 10 | Esther Lindberg | 32 | Wife | Mach. Op. | Iowa |
| 11 | Ralph G. Danuels | 41 | Head | Salesman | Massachusetts |
| 12 | Ethel Danuels | 38 | Wife | — | Massachusetts |
| 13 | Jack Danuels | 13 | Son | — | Massachusetts |
| 14 | Jean Danuels | 5 | Daughter | — | — |
| 15 | Edward Magnuson | 43 | Head | Tool Mkr | Sweden |
| 16 | Adeline Magnuson | 12 | Daughter | — | Illinois |
| 17 | Evelyn Magnuson | 7 | Daughter | — | Illinois |
| 18 | Esther Phodem | 39 | Housekeeper | Housekeeper | Finland |
| 19 | Carl Johnson | 32 | Head | Mach. Carver | Illinois |
| 20 | Dorothy Johnson | 29 | Wife | — | Illinois |
| 21 | Barbara Jean Johnson | 1 | Daughter | — | — |
| 22 | Oscar Anderson | 41 | Head | Decorator | Sweden |
| 23 | Ruby Anderson | 41 | Wife | — | Illinois |
| 24 | Leonard Franson | 18 | Son | Mixer | Illinois |
| 25 | Nels Lindstrom | 37 | Head | Machine Hand | Sweden |
| 26 | Bertha Lindstrom | 34 | Wife | Punch Press | Wisconsin |
| 27 | Guy Lederberg | 34 | Head | Cost Accountant | Wisconsin |
| 28 | Esther Lederberg | 31 | Wife | Bookkeeper | Illinois |
| 29 | Joan Lederberg | 5 | Daughter | — | — |
| 30 | Grant Cedarleaf | 29 | Head | Draughtsman | Illinois |
| 31 | Elsie Cedarleaf | 23 | Wife | — | Illinois |
| 32 | Ludwig Myrthen | 56 | Head | Brakeman | Sweden |
| 33 | Hannah Myrthen | 51 | Wife | — | Illinois |
| 34 | Carl Myrthen | 16 | Son | — | Illinois |
| 35 | Oscar Carlson | 29 | Head | Trucker | Michigan |
| 36 | Helen Carlson THIS PERSON | 27 | Wife | Clerk | Illinois |
| 37 | Kenneth Carlson | 1 | Son | — | — |
| 38 | John Carlson | 39 | Lodger | Knot Threader | Michigan |
| 39 | Carl Reaquist | 40 | Head | Machinist | Illinois |
| 40 | Marine Reaquist | 30 | Wife | Cab. Mkr. | Illinois |
Pedigree Summary
Helen
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)